Home / 218,683.44-328,128.84-130,111.92

Finding the Fourth Proportional to 218,683.44, 328,128.84 and 130,111.92

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Solution

The fourth proportional to 218,683.44, 328,128.84 and 130,111.92 is: 195,229.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,683.44 : 328,128.84 = 130,111.92 : x
  2. Step 2: Convert to fraction form
    218,683.44/328,128.84 = 130,111.92/x
  3. Step 3: Cross multiply
    218,683.44x = 328,128.84 × 130,111.92
  4. Step 4: Simplify right side
    218,683.44x = 42,693,473,379.77
  5. Step 5: Solve for x
    x = 42,693,473,379.77/218,683.44
  6. Step 6: Final answer
    x = 195,229.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.